# REQUIRES: x86 ## i386-got32x-baseless.elf is a file produced using GNU as v.2.27 ## using following code and command line: ## (as --32 -o base.o base.s) ## ## .text ## .globl foo ## .type foo, @function ## foo: ## nop ## ## _start: ## movl foo@GOT, %eax ## movl foo@GOT, %ebx ## movl foo@GOT(%eax), %eax ## movl foo@GOT(%ebx), %eax ## ## Result file contains four R_386_GOT32X relocations. Generated code ## is also a four mov instructions. And first two has no base register: ## <_start>: ## 1: 8b 05 00 00 00 00 mov 0x0,%eax ## 7: 8b 1d 00 00 00 00 mov 0x0,%ebx ## d: 8b 80 00 00 00 00 mov 0x0(%eax),%eax ## 13: 8b 83 00 00 00 00 mov 0x0(%ebx),%eax ## ## R_386_GOT32X is computed as G + A - GOT, but if it used without base ## register, it should be calculated as G + A. Using without base register ## is only allowed for non-PIC code. ## # RUN: ld.lld %S/Inputs/i386-got32x-baseless.elf -o %t1 # RUN: llvm-objdump -section-headers -d %t1 | FileCheck %s ## 73728 == 0x12000 == ADDR(.got) # CHECK: _start: # CHECK-NEXT: 401001: 8b 05 {{.*}} movl 4206592, %eax # CHECK-NEXT: 401007: 8b 1d {{.*}} movl 4206592, %ebx # CHECK-NEXT: 40100d: 8b 80 {{.*}} movl -4(%eax), %eax # CHECK-NEXT: 401013: 8b 83 {{.*}} movl -4(%ebx), %eax # CHECK: Sections: # CHECK: Name Size Address # CHECK: .got 00000004 0000000000403000 # RUN: not ld.lld %S/Inputs/i386-got32x-baseless.elf -o %t1 -pie 2>&1 | \ # RUN: FileCheck %s --check-prefix=ERR # ERR: error: can't create dynamic relocation R_386_GOT32X against symbol: foo in readonly segment; recompile object files with -fPIC or pass '-Wl,-z,notext' to allow text relocations in the output # ERR: error: can't create dynamic relocation R_386_GOT32X against symbol: foo in readonly segment; recompile object files with -fPIC or pass '-Wl,-z,notext' to allow text relocations in the output